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Blackline3 SeriesLive Sound

Only available in China

Blackline3 B218

Dual-Driver Subwoofer

Blackline B218 Subwoofer
Where to Buy or Rent

The B218 achieves the ultimate in subwoofer performance for the most prestigious Blackline 3 applications – delivering very high output levels and superb transient performance with minimal distortion. With an operating range of 35-150Hz, it houses dual long-excursion 18” (460mm)/4” (100mm) voice coil drivers with water-resistant cones and triple roll surrounds. Each driver is rated to handle 1000 watts AES, and has a magnet structure and suspension engineered for maximum linear excursion.


  • Dual-driver, direct-radiator subwoofer
  • Long-excursion 18” (460mm) drivers with 4” (100mm) voice coils
  • Water resistant cones
  • Birch-ply enclosure construction
  • Large ports for reduced air noise
  • Perforated steel grille


  • Live music clubs
  • Music bars
  • Nightclubs
  • Premium KTV

The enclosure of the B218 is constructed from multi-laminate birch ply and coated with a textured black finish. Eight reflex ports provide a large frontal area to reduce turbulent air noise, and a perforated steel grille protects the driver from damage with minimal obstruction of airflow.

When used with a Blackline 3 FX12 or FX15 coaxial system, crossover and EQ functions can be performed by the Martin Audio DX1.5 and DX2 system controllers, or by an MA Series amplifier with onboard DSP option.

Blackline3 Brochure [Eng] Blackline3 Brochure [Chinese] Datasheet
TYPE Dual-driver, direct radiating subwoofer
10dB @ 30Hz
DRIVER 2x18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
RATED POWER (2) 2000W AES, 8000W peak
MAXIMUM SPL (9) 138dB continuous, 144dB peak (half space)
DISPERSION (-6dB) (5) Omnidirectional
CROSSOVER 80-120Hz active
ENCLOSURE 330 litre, birch ply
FINISH Black paint
PROTECTIVE GRILLE Black perforated steel
CONNECTORS 2 x Neutrik® NL4
  • Input: 1+, 1-
  • Link through: 2+,2-
FITTINGSFour pocket handles
  • (W) 1085mm x (H) 530mm x (D) 780mm*
  • (W) 42.7" x (H) 20.9" x (D) 30.7"*

  • * 911mm (35.9") with wheels
WEIGHT 84kg (185lbs)
Martin Audio B218 Tech Drawing

Technical Drawings for Blackline3 B218.

All information is Copyright. Martin Audio Ltd.


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Available in this Series

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Copyright Martin Audio Ltd.
Subject to change without notice.
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